| 21. | Travelers who throng to the Upper Geyser Basin often miss the Biscuit Basin, a short drive away.
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| 22. | It is home to half of the world's total number of geysers in its nine geyser basins.
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| 23. | "' Turquoise Pool "'is a hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming.
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| 24. | "' Opal Pool "'is a hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming.
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| 25. | "' Fan and Mortar Geysers "'are two geysers in the Upper Geyser Basin in Yellowstone National Park.
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| 26. | Here, the road meets the Gibbon River and follows it into the Gibbon Geyser Basin and Gibbon Canyon.
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| 27. | Three mountain peaks, including Mount Norris, one geyser basin, and one pass in Yellowstone are named after Norris.
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| 28. | Visitors to the Lower Geyser Basin are urged to stay on a half-mile boardwalk over the treacherous terrain.
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| 29. | From Obsidian Canyon, the road continues south into the Norris Valley and the Norris Geyser Basin ( ).
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| 30. | The basin is a backcountry geyser basin located southeast of Old Faithful Geyser and the Upper Geyser Basin.
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